Registration Dossier

Administrative data

Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2009
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: guidance followed, no GLP

Data source

Referenceopen allclose all

Reference Type:
study report
Title:
Unnamed
Year:
2009
Report Date:
2009
Reference Type:
study report
Title:
Unnamed
Year:
2008
Report Date:
2008

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Deviations:
no
GLP compliance:
no
Type of method:
static method
Remarks:
NF T 20-048 AFNOR Sept.85

Test material

Reference
Name:
Unnamed
Type:
Constituent

Results and discussion

Vapour pressureopen allclose all
Temp.:
ca. 100 °C
Vapour pressure:
ca. 880 Pa
Remarks on result:
other: measured value for high purity acenaphthene
Temp.:
ca. 120 °C
Vapour pressure:
ca. 1.96 kPa
Remarks on result:
other: measured value for acenaphthene
Temp.:
ca. 20 °C
Vapour pressure:
ca. 11.8 Pa
Remarks on result:
other: extrapolated value, out of scope - for high purity acenaphthene
Temp.:
ca. 20 °C
Vapour pressure:
ca. 14.8 Pa
Remarks on result:
other: extrapolated value, out of scope - acenaphthene
Transition / decomposition
Transition / decomposition:
yes
Transition temp.:
ca. 93.1 °C
Vapour pressure at 10°C above transition temperature:
880 Pa

Any other information on results incl. tables

High purity acenaphthene:

Linear equation:                    log p = -2466.4*(1/T)+9.4847         Scope: from 100 to 275 °C

Accuracy: <10%

Nature of the change during measuring: none

 

Nature of the change for estimate: transition liquid-solid

Temperature of transition: 93,1°C

Acenapthene:

Linear equation:                    log p = -2422.1*(1/T)+9.4326          Scope: from 95 to

Accuracy: <10%

Nature of the change during measuring: none

 Nature of the change for estimate: transition liquid-solid

Temperature of transition: 66,2°C

Applicant's summary and conclusion

Conclusions:
The real value for 20°C should be 100x less than extrapolated value, due to transition liquid-solid